CN104999738A - Co-extrusion composite aluminum foil film and preparation method thereof - Google Patents
Co-extrusion composite aluminum foil film and preparation method thereof Download PDFInfo
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- CN104999738A CN104999738A CN201510513727.4A CN201510513727A CN104999738A CN 104999738 A CN104999738 A CN 104999738A CN 201510513727 A CN201510513727 A CN 201510513727A CN 104999738 A CN104999738 A CN 104999738A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/02—Open containers
- B32B2439/06—Bags, sacks, sachets
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of package, in particular to a co-extrusion composite aluminum foil film and a preparation method thereof. The co-extrusion composite aluminum foil film comprises a surface layer, a middle layer and a substrate layer, arranged in sequence from outside to inside; the upper surface of the middle layer is jointed with the lower surface of the surface layer; the lower surface of the middle layer is jointed with the upper surface of the substrate layer; a PET protection film or a PA protection film is arranged on the surface layer; an aluminum foil film is arranged on the middle layer; a multiple-layer co-extrusion film is arranged on the substrate layer; an antistatic coating is jointed to the outer surface of the surface layer. The co-extrusion composite aluminum foil film can be permanently antistatic, has high block-water capability and oxygen barrier performance, is good in sealing effect, better in tensile strength, heat resistance, cold resistance, photopathy, barrier property and chemical stability, is multiple in function and low in cost, and is a good material for manufacturing electronic component packing bags.
Description
Technical field
The present invention relates to packing technique field, be specifically related to a kind of coextru-lamination aluminium foil film and preparation method thereof.
Background technology
At present, the application of electronic product gets more and more, because the precise structure of electronic devices and components is complicated, in the process circulated and use, easily be subject to the infringement of electrostatic and water vapour molecule, the lighter makes electrical quantity drift, the lost of life of electronic component, and severe one makes components and parts entirely ineffective.The circuit of ic component reduces, withstand voltage reduction, circuit area reduces, and make weakening of the resistance to electrostatic impact ability of device, static electric field (StaticElectricField) and electrostatic induced current (ESDcurrent) become the fatal killer of these high density components and parts.The generally application of simultaneously a large amount of contour insulating materials of plastic products, causes the chance producing electrostatic to increase.As walked about in daily life, air flows, and carrying etc. can produce electrostatic.People it is generally acknowledged to only have the Xin Pian Before of CMOS class to electrostatic sensitive, and in fact, the component circuit that integrated level is high is all very sensitive.A. electrostatic is on the impact of electronic building brick: 1. Electrostatic Absorption dust, changes the impedance between circuit, affects function and the life-span of product; 2., because of insulation or the conductor of electric field or current disrupts assembly, make assembly can not work (destroying completely); 3., because of the heat that electric field or the electric current of moment produce, assembly is injured, endure, and the life-span is impaired; The feature of B, electrostatic damage: 1, disguised human body can not direct perception electrostatic, unless there is static discharge, but static discharge occurs, human body also differs the sensation of electric shock surely.This is because the static discharge voltage of human perception is 2-3KV; 2, after some electronic devices and components of latency are subject to electrostatic damage, performance does not significantly decrease, but repeatedly cumulative electric discharge can cause internal injury to device and form hidden danger, and adds the sensitiveness of device to electrostatic.The problem produced there is no any method and can cure.Can 3, randomness electronic building brick be subjected to electrostatic breakdown in what situations? so to say that after producing from an assembly, before its damages, all processes are all subject to the threat of electrostatic, and the generation of these electrostatic also has randomness.Because the generation of electrostatic and electric discharge occur all instantaneously, and difficult prediction and protection.4, complexity electrostatic discharge damage divides plate work, meticulous because of electronic product, small design feature and time-consuming, bothersome, expensive, require that more complicated technology often needs to use the precision instruments such as ESEM, even so the damage that some electrostatic damage phenomenon is also difficult to cause with other reasons is distinguished, people is lost efficacy electrostatic damage by mistake and is used as other inefficacy, this be damage of electrostatic discharge is not fully realized before, usually be attributed to initial failure or inefficacy in confused situation, thus the automatic true cause masking inefficacy.5, seriousness ESD problem it seems on the surface only have impact on manufactured goods with family, but in fact also have impact on the manufacturer of each level, as: warranty is taken, keep in repair and the reputation etc. of company.
For the problems referred to above, occur by antistatic aluminum foil film, the antistatic internal layer that this film comprises body layer, is fixedly connected on the antistatic skin outside body layer and is fixedly connected on inside body layer.Body layer is wherein generally three-layer composite structure, and two outside layers is polyester layer, polyethylene or polypropylene layer respectively, and intermediate layer is generally coated with aluminum film, independent aluminium foil or nylon layer.Due to the existence of inside and outside antistatic backing, this packaging bag can prevent the infringement of electrostatic effectively, simultaneously by the setting in intermediate layer, has the function of protection against the tide or lucifuge or obstruct, thus obtains and generally apply.
Aluminum foil sack is common is three layers, typical structure is top layer/adhesive/aluminium foil/adhesive/hot sealing layer (CPP), under normal circumstances, the interrupting performance of the aluminum foil sack of this three-decker is poor, be difficult to the packing instructions meeting some specialities, as water vapor transmittance is greater than 3g (m
224h), OTR oxygen transmission rate is greater than 15cm
3(m
224h0.1MPa).In addition, aluminium foil is mostly plain edition polyurethane adhesive at the adhesive that compound tense uses, because aluminium foil quality is firmly crisp, the gluing dosage that compound tense uses is restricted, when using this plain edition polyurethane adhesive, adhesion strength is less than 6.5kN/m mostly, and cohesive force is less than 30MPa, heat resistance is also poor, is equally also difficult to the packing instructions meeting some specialities.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of coextru-lamination aluminium foil film, this coextru-lamination aluminium foil film can permanently antistatic, there is high water resistant performance and high oxygen resistance, good sealing effect, also have good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low.
Another object of the present invention is to the preparation method providing a kind of coextru-lamination aluminium foil film, this preparation method is composited by twice, does not need adhesive, and technique is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Object of the present invention is achieved through the following technical solutions: a kind of coextru-lamination aluminium foil film; described coextru-lamination aluminium foil film comprises top layer that ecto-entad sets gradually, intermediate layer and substrate layer; the upper surface in intermediate layer and the lower surface on top layer are fitted; the lower surface in intermediate layer and the upper surface of substrate layer are fitted; top layer is PET protection film or PA diaphragm; intermediate layer is aluminium foil film, and substrate layer is PP TYPE, and the outer surface on top layer is fitted with anti-static coating.
The present invention is by adopting PET protection film or PA diaphragm as top layer, and protective value is strong, and waterproof vapour and oxygen, barrier property is excellent.
The present invention is by adopting aluminium foil film as intermediate layer, and aluminium foil has metallic luster, has higher albedo to light and heat, thus isolation performance is good, and protective value is strong, airtight body and steam, can effectively prevent the content moisture absorption and gasification, not be subject to the infringement of bacterium and insect; Aluminum foil composite packaging bag shape stability is good simultaneously, and during the printing of its lustrous surface, color fineness is bright.
The present invention, can permanently antistatic by adopting PP TYPE as substrate layer, has high water resistant performance and high oxygen resistance, good sealing effect, also have good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low.
The present invention is by the outer surface laminating anti-static coating on top layer, can on the basis ideally retaining the intrinsic physical characteristic of coextru-lamination aluminium foil film, make it have excellent electrostatic-proof function simultaneously, also there is water white transparency, light transmittance reaches more than 83%, case hardness is high, scratch resistance is excellent, superpower shock resistance and resistance to elevated temperatures give prominence to, outward appearance is beautiful, the very notable feature of flat smooth, in order to shield electromagnetic wave and to eliminate electrostatic interaction.
Preferably, described PP TYPE is three-layer extrusion film, and three-layer extrusion film comprises nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or three-layer extrusion film comprises polyethylene layer, polyethylene composite bed and the polyethylene layer that ecto-entad is fitted successively.
Another is preferred, and described PP TYPE is five-layer co-squeezing film, and five-layer co-squeezing film comprises polyethylene layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or five-layer co-squeezing film comprises polyethylene layer, adhering resin layer, evoh layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively.
Another is preferred, and described PP TYPE is seven-layer co-extrusion film, and seven-layer co-extrusion film comprises nylon layer, adhering resin layer, polyethylene layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the ethylene-vinyl acetate copolymer layer that ecto-entad is fitted successively.
Another is preferred, described PP TYPE is nine layers of co-extrusion film, and nine layers of co-extrusion film comprises nylon layer, adhering resin layer, polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively.
Preferably, the raw material of described polyethylene layer is at least one in HDPE, MHDPE, LDPE, MLDPE, LLDPE and MLLDPE, and the raw material of described polyethylene composite bed is the mixture that at least one in HDPE, MHDPE, LDPE, MLDPE and LLDPE and MLLDPE form.
More preferred, described HDPE is melt index is 0.1-0.3g/10min, density is 0.918-0.958g/cm
3high density polyethylene (HDPE); Described MHDPE is melt index is 0.4-0.8g/10min, density is 0.93-0.95g/cm
3metallocene high density polyethylene; Described LDPE is melt index is 1.5-2.5g/10min, density is 0.918-0.928g/cm
3low density polyethylene (LDPE); Described MLDPE is melt index is 1-2g/10min, density is 0.92-0.94g/cm
3metallocene low density polyethylene (LDPE); Described LLDPE is melt index is 0.2-2.2g/10min, density is 0.918-0.946g/cm
3lLDPE; Described MLLDPE is melt index is 0.8-0.9g/10min, density is 0.90-0.92g/cm
3metallocene linear-low density polyethylene.
Polyethylene layer of the present invention, polyethylene composite bed, by adopting above-mentioned raw materials, make the coextru-lamination aluminium foil film obtained have good wearability, temperature resistance and anti-static effect.
Preferably, the raw material of described nylon layer is melt temperature is 250-270 DEG C, density is 1.08-1.18g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2-3g/10min, density is 0.914-0.922g/cm
3adhering resin.Described adhering resin is the model that French A Kema produces is the adhering resin of OE825.
Nylon layer of the present invention, by adopting above-mentioned raw materials, makes the coextru-lamination aluminium foil film obtained have good barrier property.Adhering resin layer of the present invention, by adopting above-mentioned raw materials, adopts solvent-free bonding, effectively can reduce residual solvent, environmental protection, and bonding force is strong, and cost is low, also has stronger puncture resistant ability.
Preferably, the raw material of described evoh layer is melt index is 3-5g/10min, density is 1.15-1.19g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 1.5-2.5g/10min, density is 0.925-0.945g/cm
3ethylene-vinyl acetate copolymer.
Evoh layer of the present invention, by adopting above-mentioned raw materials, makes the coextru-lamination aluminium foil film obtained have splendid barrier property.Ethylene-vinyl acetate copolymer layer of the present invention, by adopting above-mentioned raw materials, makes the coextru-lamination aluminium foil film obtained have good low temperature sealing property and puncture-resistant ability.
Coextru-lamination aluminium foil film of the present invention can permanently antistatic, there is high water resistant performance and high oxygen resistance, good sealing effect, also there is good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low, is the good material making electronic package pack.
Another object of the present invention is achieved through the following technical solutions: a kind of preparation method of coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:2-5 in blow-up ratio, temperature is carry out blown film under the condition of 70-90 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm;
(4) be coated with one deck anti-static coatings on the surface on top layer and form anti-static coating, obtained described coextru-lamination aluminium foil film.
The processing temperature of described nylon layer is 240-260 DEG C, the processing temperature of described adhering resin layer is 110-130 DEG C, the processing temperature of described polyethylene layer and polyethylene composite bed is 120-140 DEG C, the processing temperature of described evoh layer is 160-180 DEG C, and the processing temperature of described ethylene-vinyl acetate copolymer layer is 60-80 DEG C.
Preparation method of the present invention is composited by twice, does not need adhesive, and technique is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
A kind of coextru-lamination aluminium foil bag, comprise bag, described bag is made up of coextru-lamination aluminium foil film described above.
Coextru-lamination aluminium foil bag of the present invention can permanently antistatic, there is high water resistant performance and high oxygen resistance, good sealing effect, also there is good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low, can be widely used in the packaging of all kinds of electronic component.
Preferably, the bottom of described bag is provided with indentation line, and indentation line is hot-forming in the bottom of bag.
Aluminium foil bag of the present invention only needs namely to can be made into through one indentation line heat-sealing, and production process is simple; And when using aluminium foil bag of the present invention to pack, one indentation line heat-sealing is carried out again at sack, add one indentation line of aluminium foil bag itself, only need twice indentation line can complete packing of aluminium foil bag, compared with sealing with four traditional road bonding edges, greatly reduce the aluminium foil bag gas leak phenomenon after packaging, good sealing effect.
Beneficial effect of the present invention is: coextru-lamination aluminium foil film of the present invention can permanently antistatic, there is high water resistant performance and high oxygen resistance, good sealing effect, also there is good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low.
Preparation method of the present invention is composited by twice, does not need adhesive, and technique is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of coextru-lamination aluminium foil film of the present invention.
Fig. 2-3 is partial sectional views of substrate layer described in the embodiment of the present invention one.
Fig. 4-5 is partial sectional views of substrate layer described in the embodiment of the present invention two.
Fig. 6-9 is partial sectional views of substrate layer described in the embodiment of the present invention three.
Figure 10 is the partial sectional view of substrate layer described in the embodiment of the present invention four.
Figure 11 is the structural representation of coextru-lamination aluminium foil bag of the present invention.
Reference numeral is: 1-top layer, 10-bag, 2-intermediate layer, 20-indentation line, 3-substrate layer, 31-nylon layer, 32-adhering resin layer, 33-polyethylene layer, 34-polyethylene composite bed, 35-evoh layer, 36-ethylene-vinyl acetate copolymer layer.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing 1-11, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment one
See Fig. 1-3; a kind of coextru-lamination aluminium foil film; described coextru-lamination aluminium foil film comprises top layer 1 that ecto-entad sets gradually, intermediate layer 2 and substrate layer 3; the upper surface in intermediate layer 2 and the lower surface on top layer 1 are fitted; the lower surface in intermediate layer 2 and the upper surface of substrate layer 3 are fitted, and top layer 1 is PET protection film or PA diaphragm, and intermediate layer 2 is aluminium foil film; substrate layer 3 is PP TYPE, and the outer surface on top layer 1 is fitted with anti-static coating.
In the present embodiment, described PP TYPE is three-layer extrusion film, and three-layer extrusion film comprises nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 2; Or three-layer extrusion film comprises polyethylene layer 33, polyethylene composite bed 34 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 3.Three-layer extrusion film of the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Embodiment two
See Fig. 4-5, the difference of the present embodiment and above-described embodiment one is: described PP TYPE is five-layer co-squeezing film, five-layer co-squeezing film comprises polyethylene layer 33, adhering resin layer 32, nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 4; Or five-layer co-squeezing film comprises polyethylene layer 33, adhering resin layer 32, evoh layer 35, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 5.Five-layer co-squeezing film of the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Embodiment three
See Fig. 6-9, the difference of the present embodiment and above-described embodiment one is: described PP TYPE is seven-layer co-extrusion film, seven-layer co-extrusion film comprises nylon layer 31, adhering resin layer 32, polyethylene layer 33, adhering resin layer 32, nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 6; Or seven-layer co-extrusion film comprises polyethylene layer 33, adhering resin layer 32, nylon layer 31, adhering resin layer 32, nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 7; Or seven-layer co-extrusion film comprises polyethylene layer 33, adhering resin layer 32, nylon layer 31, evoh layer 35, nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively, as shown in Figure 8; Or seven-layer co-extrusion film comprises polyethylene layer 33, adhering resin layer 32, nylon layer 31, evoh layer 35, nylon layer 31, adhering resin layer 32 and the ethylene-vinyl acetate copolymer layer 36 that ecto-entad is fitted successively, as shown in Figure 9.Seven-layer co-extrusion film of the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Embodiment four
See Figure 10, the difference of the present embodiment and above-described embodiment one is: described PP TYPE is nine layers of co-extrusion film, and nine layers of co-extrusion film comprises nylon layer 31, adhering resin layer 32, polyethylene layer 33, adhering resin layer 32, nylon layer 31, evoh layer 35, nylon layer 31, adhering resin layer 32 and the polyethylene layer 33 that ecto-entad is fitted successively.Nine layers of co-extrusion film of the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Embodiment five
See Figure 11, a kind of coextru-lamination aluminium foil bag, comprises bag 10, and described bag 10 is made up of coextru-lamination aluminium foil film described above.
In the present embodiment, the bottom of described bag 10 is provided with indentation line 20, and indentation line 20 is hot-forming in the bottom of bag 10, and indentation line 20 and bag 10 surround an open top, middle part for the aluminium foil bag of containing objects.
Embodiment six
The difference of the present embodiment and previous embodiment is: the raw material of described polyethylene layer is the mixture that HDPE and LDPE forms, and the raw material of polyethylene composite bed is the mixture of HDPE and MLLDPE composition.
Described HDPE is melt index is 0.1g/10min, density is 0.918g/cm
3high density polyethylene (HDPE); Described LDPE is melt index is 1.5g/10min, density is 0.918g/cm
3low density polyethylene (LDPE); Described MLLDPE is melt index is 0.8g/10min, density is 0.90g/cm
3metallocene linear-low density polyethylene.
The raw material of described nylon layer is melt temperature is 250 DEG C, density is 1.08g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2g/10min, density is 0.914g/cm
3adhering resin.
The raw material of described evoh layer is melt index is 3g/10min, density is 1.15g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 1.5g/10min, density is 0.925g/cm
3ethylene-vinyl acetate copolymer.
A preparation method for coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:2 in blow-up ratio, temperature is carry out blown film under the condition of 70 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer 3, form intermediate layer 2 on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer 1 is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm;
(4) be coated with one deck anti-static coatings on the surface on top layer 1 and form anti-static coating, obtained described coextru-lamination aluminium foil film.
Embodiment seven
The difference of the present embodiment and previous embodiment is: the raw material of described polyethylene layer is the mixture that LDPE and LLDPE forms, and the raw material of polyethylene composite bed is the mixture of MHDPE and MLLDPE composition.
Described MHDPE is melt index is 0.4g/10min, density is 0.93g/cm
3metallocene high density polyethylene; Described LDPE is melt index is 2g/10min, density is 0.923g/cm
3low density polyethylene (LDPE); Described LLDPE is melt index is 0.2g/10min, density is 0.918g/cm
3lLDPE; Described MLLDPE is melt index is 0.8g/10min, density is 0.90g/cm
3metallocene linear-low density polyethylene.
The raw material of described nylon layer is melt temperature is 255 DEG C, density is 1.10g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2.2g/10min, density is 0.916g/cm
3adhering resin.
The raw material of described evoh layer is melt index is 3.5g/10min, density is 1.16g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 1.8g/10min, density is 0.930g/cm
3ethylene-vinyl acetate copolymer.
A preparation method for coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:3 in blow-up ratio, temperature is carry out blown film under the condition of 75 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm, obtained described coextru-lamination aluminium foil film.
Embodiment eight
The difference of the present embodiment and previous embodiment is: the raw material of described polyethylene layer is the mixture that HDPE, LDPE and MLLDPE form, and the raw material of polyethylene composite bed is the mixture of LDPE and MLLDPE composition.
Described HDPE is melt index is 0.2g/10min, density is 0.938g/cm
3high density polyethylene (HDPE); Described LDPE is melt index is 2g/10min, density is 0.923g/cm
3low density polyethylene (LDPE); Described MLLDPE is melt index is 0.85g/10min, density is 0.91g/cm
3metallocene linear-low density polyethylene.
The raw material of described nylon layer is melt temperature is 260 DEG C, density is 1.13g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2.5g/10min, density is 0.918g/cm
3adhering resin.
The raw material of described evoh layer is melt index is 4g/10min, density is 1.17g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 2g/10min, density is 0.935g/cm
3ethylene-vinyl acetate copolymer.
A preparation method for coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:4 in blow-up ratio, temperature is carry out blown film under the condition of 80 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm, obtained described coextru-lamination aluminium foil film.
Embodiment nine
The difference of the present embodiment and previous embodiment is: the raw material of described polyethylene layer is the mixture that MHDPE and MLDPE forms, and the raw material of polyethylene composite bed is the mixture of MLDPE and MLLDPE composition.
Described MHDPE is melt index is 0.6g/10min, density is 0.94g/cm
3metallocene high density polyethylene; Described MLDPE is melt index is 1.5g/10min, density is 0.93g/cm
3metallocene low density polyethylene (LDPE); Described MLLDPE is melt index is 0.85g/10min, density is 0.91g/cm
3metallocene linear-low density polyethylene.
The raw material of described nylon layer is melt temperature is 265 DEG C, density is 1.15g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2.8g/10min, density is 0.920g/cm
3adhering resin.
The raw material of described evoh layer is melt index is 4g/10min, density is 1.17g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 2g/10min, density is 0.935g/cm
3ethylene-vinyl acetate copolymer.
A preparation method for coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:4 in blow-up ratio, temperature is carry out blown film under the condition of 85 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm, obtained described coextru-lamination aluminium foil film.
Embodiment ten
The difference of the present embodiment and previous embodiment is: the raw material of described polyethylene layer is the mixture that MLDPE and MLLDPE forms, and the raw material of polyethylene composite bed is the mixture of LLDPE and MLLDPE composition.
Described MLDPE is melt index is 2g/10min, density is 0.94g/cm
3metallocene low density polyethylene (LDPE); Described LLDPE is melt index is 2.2g/10min, density is 0.946g/cm
3lLDPE; Described MLLDPE is melt index is 0.9g/10min, density is 0.92g/cm
3metallocene linear-low density polyethylene.
The raw material of described nylon layer is melt temperature is 270 DEG C, density is 1.18g/cm
3nylon; The raw material of described adhering resin layer is melt index is 3g/10min, density is 0.922g/cm
3adhering resin.
The raw material of described evoh layer is melt index is 5g/10min, density is 1.19g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 12.5g/10min, density is 0.945g/cm
3ethylene-vinyl acetate copolymer.
A preparation method for coextru-lamination aluminium foil film, comprises the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:5 in blow-up ratio, temperature is carry out blown film under the condition of 90 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm, obtained described coextru-lamination aluminium foil film.
The mechanical and physical performance of the coextru-lamination aluminium foil film that embodiment six to ten is obtained is as shown in table 1.
Table 1
| Test event | Standard value | Embodiment six | Embodiment seven | Embodiment eight | Embodiment nine | Embodiment ten |
| OTR oxygen transmission rate (g/m 2·24h） | ≤10.0 | 0.06 | 0.05 | 0.04 | 0.05 | 0.05 |
| Moisture-vapor transmission (g/m 2·24h） | ≤10.0 | 0.02 | 0.01 | 0.02 | 0.03 | 0.01 |
| Resistivity (Ω m) | ≤10 10 | 5.3×10 7 | 4.4×10 7 | 6.2×10 7 | 3.5×10 7 | 4.6×10 7 |
| Solvent residual amount (mg/m 2） | ≤10.0 | 0.01 | 0.02 | 0.01 | 0.01 | 0.02 |
| Heat seal strength (N/50mm) | ≥20.0 | 70 | 68 | 72 | 69 | 71 |
| Peel strength (N/15mm) | ≥1.8 | 3.6 | 3.7 | 3.5 | 3.4 | 3.6 |
| Pull-off force (N/15mm) | ≥40.0 | 95 | 96 | 94 | 97 | 96 |
As can be seen from the above table, the resistivity of coextru-lamination aluminium foil film that the present invention obtains is low to moderate 10
7Ω m, close to conductive resistance rate, the effective antistatic of energy, the term of validity is long; The coextru-lamination aluminium foil film that the present invention obtains has stronger barrier property, and the barrier property of oxygen and steam all exceedes national test stone; The coextru-lamination aluminium foil film that the present invention obtains also has higher heat seal strength and peel strength, good sealing effect; And solvent residual amount is extremely low, environmental protection, pollution-free.
Coextru-lamination aluminium foil film of the present invention can permanently antistatic, and have high water resistant performance and high oxygen resistance, good sealing effect, also have good hot strength, heat-resisting, cold-resistant, photophobism, barrier and chemical stability, diverse in function, cost is low.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a coextru-lamination aluminium foil film; it is characterized in that: described coextru-lamination aluminium foil film comprises top layer that ecto-entad sets gradually, intermediate layer and substrate layer; the upper surface in intermediate layer and the lower surface on top layer are fitted; the lower surface in intermediate layer and the upper surface of substrate layer are fitted; top layer is PET protection film or PA diaphragm; intermediate layer is aluminium foil film, and substrate layer is PP TYPE, and the outer surface on top layer is fitted with anti-static coating.
2. a kind of coextru-lamination aluminium foil film according to claim 1, is characterized in that: described PP TYPE is three-layer extrusion film, and three-layer extrusion film comprises nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or three-layer extrusion film comprises polyethylene layer, polyethylene composite bed and the polyethylene layer that ecto-entad is fitted successively.
3. a kind of coextru-lamination aluminium foil film according to claim 1, it is characterized in that: described PP TYPE is five-layer co-squeezing film, five-layer co-squeezing film comprises polyethylene layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or five-layer co-squeezing film comprises polyethylene layer, adhering resin layer, evoh layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively.
4. a kind of coextru-lamination aluminium foil film according to claim 1, it is characterized in that: described PP TYPE is seven-layer co-extrusion film, seven-layer co-extrusion film comprises nylon layer, adhering resin layer, polyethylene layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, adhering resin layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively; Or seven-layer co-extrusion film comprises polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the ethylene-vinyl acetate copolymer layer that ecto-entad is fitted successively.
5. a kind of coextru-lamination aluminium foil film according to claim 1, it is characterized in that: described PP TYPE is nine layers of co-extrusion film, nine layers of co-extrusion film comprises nylon layer, adhering resin layer, polyethylene layer, adhering resin layer, nylon layer, evoh layer, nylon layer, adhering resin layer and the polyethylene layer that ecto-entad is fitted successively.
6. a kind of coextru-lamination aluminium foil film according to claim 2, it is characterized in that: the raw material of described polyethylene layer is at least one in HDPE, MHDPE, LDPE, MLDPE, LLDPE and MLLDPE, the raw material of described polyethylene composite bed is the mixture that at least one in HDPE, MHDPE, LDPE, MLDPE and LLDPE and MLLDPE form.
7. a kind of coextru-lamination aluminium foil film according to claim 6, is characterized in that: described HDPE is melt index is 0.1-0.3g/10min, density is 0.918-0.958g/cm
3high density polyethylene (HDPE); Described MHDPE is melt index is 0.4-0.8g/10min, density is 0.93-0.95g/cm
3metallocene high density polyethylene; Described LDPE is melt index is 1.5-2.5g/10min, density is 0.918-0.928g/cm
3low density polyethylene (LDPE); Described MLDPE is melt index is 1-2g/10min, density is 0.92-0.94g/cm
3metallocene low density polyethylene (LDPE); Described LLDPE is melt index is 0.2-2.2g/10min, density is 0.918-0.946g/cm
3lLDPE; Described MLLDPE is melt index is 0.8-0.9g/10min, density is 0.90-0.92g/cm
3metallocene linear-low density polyethylene.
8. a kind of coextru-lamination aluminium foil film according to any one of claim 2-5, is characterized in that: the raw material of described nylon layer is melt temperature is 250-270 DEG C, density is 1.08-1.18g/cm
3nylon; The raw material of described adhering resin layer is melt index is 2-3g/10min, density is 0.914-0.922g/cm
3adhering resin.
9. a kind of coextru-lamination aluminium foil film according to claim 4, is characterized in that: the raw material of described evoh layer is melt index is 3-5g/10min, density is 1.15-1.19g/cm
3ethylene-vinyl alcohol copolymer; The raw material of described ethylene-vinyl acetate copolymer layer is melt index is 1.5-2.5g/10min, density is 0.925-0.945g/cm
3ethylene-vinyl acetate copolymer.
10. the preparation method of a kind of coextru-lamination aluminium foil film as described in any one of claim 1-9, is characterized in that: comprise the steps:
(1) each layer raw material is added each layer extruder respectively to carry out fusion plastification, extrude, be then 1:2-5 in blow-up ratio, temperature is carry out blown film under the condition of 70-90 DEG C, then through the cooling of lower blowing water cold process, obtained PP TYPE;
(2) using PP TYPE as substrate layer, form intermediate layer on the surface of PP TYPE by mode compound one deck aluminium foil film of hot pressing;
(3) top layer is formed on the surface of aluminium foil film by mode compound one deck PET protection film of film or PA diaphragm;
(4) be coated with one deck anti-static coatings on the surface on top layer and form anti-static coating, obtained described coextru-lamination aluminium foil film.
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